The BCW 1 Screw Super Thick Card Holder is made of high impact, crystal clear polystyrene with all of the features and benefits of a ? Inch screwdown in a compact design. Holds jersey and memorabilia cards up to 120 points 2 piece design with brass screw Individually packaged Exterior Dimensions: 2 27/32 x 4 Interior Dimensions: 2 17/32 x 3 1/2.